Writing and drawing surface



May15, 1923. v 1,455,579

D. EVANS WRITING AND DRAWING SURFACE Filed Abril 12 1920 Patented May15, 1923.

NT oi-"rica.

DANIEL EVANS, OF HIGHBZURY, LONDON, ENGLAND.

WRITING AND DRAWING SURFACE.

Application filed April 12, 1920. Serial No. 373,413.

To all whom it may concern:

Be it known that I, DANInL EVANS, a subject of His Majesty the King ofEngland, and resident of Highbury, in the county of London, Kingdom ofEngland, have invented certain new and useful I mprovements in orConnectedwith Writing and Drawing Surfaces, of which the following is aspecification.

This invention relates to writing and drawing surfaces.

The invention has for its ob ect to provide a perpetual writing anddrawing surface applicable to writing pads, slabs, blocks and books,sketching blocks, drawing books and the like, from which surface thewriting, drawings or other matter thereon can be instantaneouslyobliterated or caused to disappear without the use of indiarubber orother erasing means, and upon which the matter can be preserved so longas desired. Thus, the invention provides a writing and drawing surfacewhich can be used time after time without injury to or renewing saidsurface, thereby economizing a er.

p ccording to the invention the improved writing and drawing surfaceconsists primarily of a coloured base embodying a plastic substance, anda semi-transparent or transparent writing and drawing surface properincorporated with and disposed above said base.

Further considered, the writing and drawing surface consists of acoloured base coated or impregnated with or consisting of a plasticsubstance or vehicle, and a writing and drawing surface properconsisting of transparent or semi-transparent tissue or other paper,silk, skin or like material the plastic substance or vehicle and thesurface proper being impregnated, coated or treated with grease or oil.

In the drawing in whlch like characters of reference designatecorresponding parts in the several views Figure 1 is a perspective viewof a writing and drawing surfaceconstructed in accordance with thisinvention.

Figure 2 is a detail view of th and writing instrument.

Figure 3 is a sectional. view on' the line 3-3 of Figure 1.

In a suitable manner of-carrying out the invention the writing anddrawing surface comprises a cardboard, wooden or other suitdrawing ablehard or firm board or base a coated on its upper surface with clay,putty, wax, or other suitable lasticmaterial 0 serving as a vehicle,whic plastic material or vehicle is impregnated or coated with grease oroil such as Vaseline or castor .oil. Thus the plastic material may beclay or wax initially prepared with an oil or grease and of the natureused for modelling, or clay, wax or the like substance may be firstapplied to the board or base and the grease or oil be subsequentlyrubbed thereinto. The plastic material may be applied to the board orbase to any thickness desired. A suitable colouring matter, such aspowdered Indian ink, is mixed with or coated upon the plastic materialor vehicle if desired, or said plastic material may be such that it hasa sufiicient depth of colour without the necessity for the additionthereto of a separate colouring matter. The grease or oil used must benondrying so that the plastic material is maintained sufliciently softand moist for the purposes of themvention. If desired, and particularlyif the plastic material or vehicle has a natural offensive odour, ascented grease or oil, such as camphorated oil, may be mixed with thesame. The writing and drawin surface proper used in conjunction with t eplastic material consists of a sheet (Z of greased, oiled or waxedtissue or other paper, silk, skin, linen, or other like transparent orsemi-transparent soft and pliable material such as the waterproofedpaper used for packing modelling Waxes and clays.

The prepared paper or the like may be in one or more sheets and laidfiat upon the plastic material, and the or each sheet may 7 be securedby its top, side or bottom edge to the board or base in any orderdesired,

Of course, if a plurality of sheets are provided they would be used inturn upon a single layer of the plastic material or upon a number ofseparate layers thereofaccording to whether it is desired to preservethe writing or other matter upon any one or more of them, or as it orthey become worm out or otherwise useless. Again, a pluralityof sheetsnot attached to the front surface of the board or base may be suppliedin reserve or as refills, so that the writtin and drawing surface propercan be remove or interchanged at will. The prepared paper or the likemay be ruled, and it can be combined in one writing or drawing pad .suchas a or other single article with ordinar writing or drawing paper. Theprepare paper or the like may be mounted m one'or more wooden or otheror base.

In use, and when a sheet of the paper or the like is laid upon theplastic material, writing, sketches or drawings can be easlly made uponsaid paper or the llke with the aid of an instrument 9 havin a bluntpoint, iece of wire. it as been found that very istinct and clearwritings or markings can be formed in this manner with very littlepressure, the latter being less than that used when writing or drawingonordinary paper, owing to the soft nature of the plastic. material, andto the hardness of the instrument used for writing or drawing, saidinstrument depresses the parts of the paper or the like over which itismoved into the substance of the plastic material or 1nto close contactwith the same, and the grease or oil in said material or-in the paper orthe" like maintains this depression or contact unless and until thepaper or the like is disturbed. Again, owing to the presence of thegrease or oil the colour in or of the 'plastlc material appears throughthe paper or the like at the place where the latter is depressed into orin contact with said material thus rendering the markings clear andbold. However, directly as the paper or the like is raised from theplastic material the markings disappear, so that thepaper or the like iscleared for'a subsequent use.

Pictures, drawings or the like can be traced or copied onto the paper orthe like when laid upon the latter and by using a piece-of wire, apencil or the like.

Should the plastic material become dry or useless after much use itssurface can be re-prepared by simplv rubbing the finger over the latteror a little Vaseline or other grease or oil thereupon.

If desired, the plastic substance may be transparent or translucent, andthe cardboard, wooden or other board or base proper be black or someother deep colour.

The device may be used by itselfor in conjunction with other articlesfor advertising, educational and other purposes. The advertising orother matter may be arranged at the top of the writing and drawingsurface on' a strip 6 terminating at f a short'distance below the top ofthe writing and drawing surface.

What I claimis 1. A writing and drawing surface from which writing,drawings .and other markings thereon can be instantaneously obliteratedand caused to disappear without the use of india rubber or other erasingmeans and upon which such matter can be preserved, said writing anddrawing surface being adapted for repeated use without reframes hingedto the board colored base of clay adapted to receive imaaeeme y r newaland comprising a colored base including a relatively soft plasticsubstance adapted to receive impressions. from a drawing and writinginstrument, and a writing and drawing surface proper associated with anddisposed above said base and being free-to be lifted therefrom and beingsufiiciently transparent to permit the colored base to show through it,the material of the base and Writing surface being adapted to ad here atpoints of pressure of the writing instrument.

2. A writing and drawing surface from; which writing, drawings and othermarkings may be instantly obliterated and caused to disappear and uponwhich said matter may be preserved, said writing and drawing sur-' facebeing capable of repeated use without .renewal and comprising arelatively soft pressions from a blunt drawing and writing 1nstrument,and a'drawing surface proper associated with and disposed above the clayand being free to be lifted therefrom and being sufficiently transparentto show the colored base through it, the material of the base andwriting surface being adapted to adhere at points of pressure of thewriting instrument. Y

3fA writing and drawing surface from which writing, drawings and othermark-- ings may be instantaneously obliterated and caused to disappearwithout use of india rubber or other erasing means and upon.

which such markings may be preserved, said 1 writing and drawing surfacebeing capable of repeated use without renewal and comprising a coloredbase ofrelatively soft plastic material adapted to receive impres-'sions and a drawing surface proper con- 105 sisting of a sheet ofmaterial and being free to be lifted from the base, sufficientlytransparent to show the colored base through it, the material ofthe baseand writing sur-' face being adapted to adhere at points of pressure ofthe writing instrument.

4. A writing and drawing surface from which writing, drawings and othermarkings may be obliterated and caused to disappear without the use ofindia rubber or 115 other erasing means and upon which such markings maybe preserved, said writing and drawing surface being capable of repeateduse without renewal and comprising a colored base of relatively softplastic material carrying an oil, and an oiled or Waxed writing .anddrawing surface proper arranged upon the base and adapted to be markedupon and to permitimpressions to be made in the plastic base, said sheetbeing free to be lifted from the base, the material. of the base andwriting surface being adapted to adhere at points of pressure of thewriting instrument.

I 5. A writing and drawing surface including a colored plastic base ofrelatively soft clay adapted to receive impressions and carrying an oil,and a writing and drawing surface proper consisting of an oiled or waxedsheet supported upon the base and being suflicientl transparent topermit the base to show t rough it, said sheet being adapted to receivemarkings from a blunt instrument and permitting same to make impressionsin the plastic base and being also. free to be lifted therefrom, themate- 'rial of the base and writing surface being adapted to adhere atpoints of pressure of the writing instrumen 6. A writing and drawingsurface including a.colored plastic base of relatively soft clay adaptedto receive impressions and carrying an oil, and a' writing and drawingsurface proper consisting of an oiled or waxed sheet of flexiblematerial supported upon the base and being sufliciently' transparent topermit the base to show through it, said sheet of flexible materialbeing adapted to receive markings from a blunt instrument and permittingsame to make impressions in the plastic base and being also free to, belifted therefrom,- the material of the base and writing surface beingadapted to adhere at points of pressure of the writing instrument.

signed my name.

DANIEL EVANS.

